A1207 / A1207C
Contents
1. 21702 01 GS o BP 2007 r aa 200 a O 200 r 100674 27 Acoustic Control Systems Ltd Moscow 20052. Acoustic Control Systems Ltd OPERATION MANUAL Ultrasonic Thickness Gauge 1207 A1207C ULTRASONIC THICKNESS GAUGE 1207 1207 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 GENERAL INFORMA PERS EE US REESE 4 l1 aici ee tt ca tutis 4 ge 0 0220 5 T9 DE HVE RI OE 7 DEVICE OPERA 8 2 1 PREPARATIONS MEASUREMENTS 8 2 2 MEASUREMENTS USING PRESET ULTRASOUND VECO c T 8 2 3 MEASUREMENTS AND ADJUSTMENT OF 9 ADDITIONAL ADJUSTMENTS OF THE DEVICE 11 3 1 ADJUSMENTS ON THE KNOWN VELOCITY IN TESTIND MATERIAL T 12 3 2 ADJUSTMENT ON THE ARBITRARY ULTRASOUND VELOCITY IN TESTING MATERIAL WITH THE KNOW THICKNESS 13 93 SETOF THE COW sui unu EE ede o ee 16 TECHNICAL SPECIFICATION 2 cc Lerner eren esee 17 PRINCIPLES OF OPERATION ee 18 SOME NOTES ON OPERATION eee sssss 19 MAINTENANCE WORKS eese coast cuoc anaiss 21 7 1 RECHARGING OF ACCUMULATORS 21 7 2 ADAPTATION TO THE PROBE S NOISE LEVEL
3. 21 7 3 REPLACEMENT OF THE PROBE S CAPSULE 22 WARRANT Y Ron a aU pecu 24 ATTACHMENT 26 3 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 1207 1 GENERAL INFORMATION 1 1 GENERAL APPLICATION A1207 and A1207C are small hand held Ultrasonic Echo pulse Thickness Gauges in a form of marker pen designed for general thickness measurements A1207C is a special version of A1207 that is equipped with single crystal probe CC in the end of the marking means single crystal probe A1207 is applicable for measurements of wall thickness on tubes pipes including pipe turns pressure vessels boilers and other subjects from black and non ferrous metals with flat and corroded surfaces which roughness is up to Rz160 and curvature radius is from 10 mm The range of thickness for measurements on steel is 0 8 up to 30 mm A1207C is applicable for measurements of height for rails and other metallic subjects with surface roughness up to 7160 and curvature radius from 40 mm Range of thickness for measurement on steel is 10 up to 200 mm Range of ultrasound velocity in the testing materials can vary from 1000 to 9000 m s As a couplant can be used different technical oils glycerin gel and other Operating conditions for these devices are as follows e Environmental temperature 30 C up to 50 C e Relative humidity 85 at 25 C e Atmosphere pressure up to 106 7 kPa Acou
4. ADJUSMENTS ON THE KNOWN VELOCITY IN TESTIND MATERIAL To adjust the device on the known velocity you need to do the following actions Press On Off button On the screen you will see horizontal strokes Press menu button with a thin stick On the screen you will see One This is the item of the Menu to which the new meaning will be saved Pressing the Menu button you can choose the necessary item in the menu To change the meaning of ultrasound velocity saved on the chosen location 1 4 you have to press one time or button and the velocity meaning that was saved in this item of menu will start to change 12 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 Note In this case on the screen you will see 10 m s higher or lower meaning depending on which button you have pressed then the preset meaning on this menu item To set the new meaning you should press these buttons or until you have the necessary figures on the display You can change the sound velocity in the range from 1000 up to 9000 m s with the step of 10 m s o To save the set velocity press the button of velocity choice 3 2 ADJUSTMENT ON THE ARBITRARY ULTRASOUND VELOCITY IN TESTING MATERIAL WITH THE KNOW THICKNESS When you work with the material ultrasound velocity for which is not known you can adjust the device with the help of sample block
5. Recharging of the accumulator is made through the special plug 6 Pic 1 Time of charging is about 11 hours It is also possible to work with the external power supply that should be connected to the same plug For adjustment of the ultrasound velocity in testing material there is a button for choice of ultrasound velocity 5 Pic 1 Usually there are four most frequently used velocity meanings for structural alloys are preset in the device 5400 m s Stainless Steel 5950 m s Low alloyed Steel 6060 m s Steel 40X13 6300 m s Aluminium Alloy D16 For more exact adjustment of the ultrasound velocity for a particular material there are three additional hidden buttons 10 in the device These buttons are hidden behind the front panel of the case Pic 1 With these buttons you can set the meaning of ultrasound velocity from 1000 up to 9000 m s with a step of 10 m s These set up buttons allows the operator adjust the meanings of four saved velocity meanings under his own testing materials and then choose them already with external button of velocity choice Besides with the help of these additional buttons the operator can also set the following parameters Time interval that compensates signal s delay time in prisms of ultrasonic probe The lower limit of measuring thickness range Contrast level of the display Dimension of the testing readings metric or English All the set characteristics of the thickness gauge are saved after tur
6. made from the same material as the object of testing When you don t have the sample block you can measure the thickness of the object if it is possible with the exact measuring device such as slide gauge or micrometer And then you can adjust the device the same way as adjustments by the sample block For example you need to test the object from steel of the unknown type For that you need to do the following steps Measure the thickness of the sample block 13 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 Press On button On the screen you will see the horizontal strokes With the help of Velocity Choice button choose the rarely used meaning of ultrasound velocity that can be changed for ex 5400 m s n BEAR o A1207 Put the device on the sample block On the display you will see the reading that will be the approximate thickness of the sample Notes If the reading of the device differs from the thickness of sample block you need to change the ultrasound velocity see art 3 1 of this manual The right ultrasound velocity can be picked up or calculate from the following equation 1 1 where the calculated ultrasound velocity C1 the chosen ultrasound velocity d1 the real thickness of the sample block d the measured with the device thickness of the sa
7. IC THICKNESS GAUGE 1207 1207 Production number 25 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C 9 ATTACHMENT Velocity of Longitudinal ultrasonic waves in materials m s Plexiglas 2550 Brass 4430 Soda lime glass 5500 Tantalum 4235 Magnesium 5790 Textolite 2920 Manganin 4660 Teflon 1350 Manganese 5561 China porcelain 5340 Chrome 6845 Molybdenum 6290 Zinc 4170 lron Nickel 5630 Zirconium 4900 Tin 3320 Cast iron 5000 5600 Osmium 5478 Plexiglas 2670 Polystyrene 2350 26 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C o6 PATTERN APPROVAL CERTIFICATE OF MEASURING INSTRUMENTS 01 2006 r os sysyowwyyysyyysyyyyy
8. at is about 0 1 0 3 mm But you will have to take into the account that the thickness of the paint layer will be added to the result of measuring How you put the probe on the surface To have a good transmission of the ultrasound into the material you need to press the probe tightly to the surface of the object When you measure the wall thickness of cylindrical objects especially of small diameters it is recommended to use tough contact liquids and put more liquid on the point of contact Electro acoustic screen that is the line on the operating surface of the probe A1207 should be directed perpendicular to the tube s axle Pressing the probe to the tube s surface and watching the readings of the device you need to lean the probe from side to side in the plane perpendicular to the tube s axle Move the probe step by step along the tube s wall do not slide with it The device s readings when leaning from the middle are increasing a little For a real thickness of the wall take the minimal stabile reading of the device at contacting the tube s wall with the middle of the probe s operating surface When the probe leans strongly from this position the readings of the device will change in leaps and bounds Objects with double convex curvature tube s turning spherical coverings and so on are the most difficult for testing because the contact with them is only possible in one point The probe should contact the object with the mid
9. dle of it s operating surface Non parallelism or eccentricity If the external and internal surfaces of the testing material are not parallel or are eccentric to each other then the reflected wave the echo pulse deviates from the necessary direction and the exactness of readings decreases 19 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 Acoustic characteristics of material some characteristics of constructive materials can essentially limit the exactness of measurement and range of measured thickness 1 Sound dispersion In some materials for example some types of stainless steel cast iron composites the sound energy is dispersing on crystallite moulding or on additions in composites This effect reduces the possibility of quality receipt of reflected from back side signal and because of that limits the possibility of ultrasound testing 2 Velocity changes In some materials there are essential changes of ultrasound from point to point inside the material some types of stainless cast steel and copper this effect is coursed by the relatively big sizes of grains and by anisotropy of sound velocity with respect to the grain orientation 20 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C 7 MAINTENANCE WORKS 7 1 RECHARGING OF ACCUMULATORS When the accumulators are almost empty this state will be indicated with four r
10. e For that you need to use the steel testing sample block that is in the basic set of the device To test the device both A1207 and A1207C you need to do the following Press the On button Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 On the screen you will see horizontal strokes With the help of Velocity choice buttons set the ultrasound velocity for the control steel sample block Put the device on the control block and hold for 1 2 seconds until the reading stops changing on the display Take the device of the block and see the result of testing The device s reading should be the same as the real thickness of the sample block If the reading of the device differs from the real thickness of the block then you will have to adjust the threshold unit of the device under the new noise level of the probe see item 7 2 and then test the device one more time 10 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C 3 ADDITIONAL ADJUSTMENTS OF THE DEVICE Under the holes on the front panel there are internal buttons for additional adjustments of the device menu chooses the item of the adjusted parameter increase or reduce the adjusted parameter These buttons make it possible for the operator to adjust the preset meanings of ultrasound velocity under the velocity in the g
11. e it if the readings of the device less then the real thickness of the samples or increase the time if the readings are higher then the real thickness 23 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 A1207C 8 WARRANTY Acoustic Control Systems Ltd ACS Ltd warrants the device for 1 year from the date of sale excluding the transducer The standard warranty period for the transducer is 3 months from the date of sale If something happens to the device during the warranty period for reasons covered by the warranty ACS Ltd at its option will e Repair the Product or e Replace the product if is unable to repair it This warranty does not cover damages due to external causes including accident usage not in accordance with product instruction misuse The warranty also looses its validity if the customer tried to repair the device himself or under mechanical effect the device became nonrepairable For all the questions of repair spare parts replacement and delivery of additional accessories such as clip for the wearing on the cloths additional cable for external power supply and additional nameplates call manufacture under the following address Acoustic Control Systems Ltd AKS Russia 119048 Moscow PO Box 148 AKS Tel Fax 095 244 31 94 244 25 35 245 58 96 E mail market acsys ru Website www acsys ru 24 Acoustic Control Systems Ltd Moscow 2005 ULTRASON
12. ed dots blinking on the display Charging is made through the special plug in the gauge s case with the of the charging unit delivered in the basic set of the device Time of charging is 10 hours Notes You can use the device while it is being charged without any limitation but the time of charging will increase 7 2 ADAPTATION TO THE PROBE S NOISE LEVEL During the exploitation because of wearing of the probe the level of its noises is continuously increasing To have low possibility of wrong readings you need from time to time approximately 1 time pro week adapt the device to the new noise level of the ultrasonic probe Before the adaptation of the device you need to wipe the probe s surface until it is fully dry When power off press velocity choice button and holding it press On button On the display you will see four symbols 21 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C After that leave the velocity choice button On the display you will see horizontal strokes In 1 2 seconds they should blink and that will mean that the device is ready for work 7 3 REPLACEMENT OF THE PROBE S CAPSULE When the probe s capsule is worn out it is possible to replace it For that do the following actions Unstick the nameplate from the rear side of the device Loose two screws that fasten two parts of the case Take the front
13. iven materials After that the adjusted and saved meaning of velocity can be chosen with the help of velocity choice button Besides with the help of these additional buttons the operator can also set the following parameters Time interval that compensates signal s delay time in prisms of ultrasonic probe The lower limit of measuring thickness range Brightness level of the display Dimension of the testing readings Metric or Imperial Attention The changed meaning of ultrasound velocity is being saved in the device memory with pressing velocity choice button There are 8 eight items in the hidden menu of the device e First four items of the menu are the preset meanings of the ultrasound velocity 1 5400 m s 2 5950 m s 3 6060 m s 4 6300 m s 5 meaning of time delay of the signal in the probe s prism e 6 meaning of the minimal thickness that can be measured 11 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 e 7 Brightness level of the display in general there are 7 levels in the device from 0 till 6 e 8 dimension of the results of measurement English or metric METRIC Euro all the results will be in metric units IMPERIAL Inch all the results will be represented in Imperial units All the adjusted and saved in the memory parameters will be saved after turning off the device 3 1
14. mple block For example 5400 5 4 5 1 5720 m s the necessary ultrasound velocity 14 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C o Change the ultrasound velocity in the device Put the device on the sample block and compare the real thickness with the readings of the device If it is necessary you will need to repeat these actions until the device shows the same thickness of the sample block as it s real thickness is Each time you change the meaning of ultrasound velocity you have to save it in the memory of the device see art 3 1 of this manual 15 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 A1207C 3 3 SET OF THE LOW THICKNESS LIMIT Compulsory limitation of the low limit in the range of measured thicknesses allows to avoid the wrong readings of the device The low limit the minimal thickness can be set with the internal buttons It is the item 6 of the menu For A1207 it is typical to set the low limit in the range from 0 4 up to 10 mm with a step 0 1 mm Regularly the low limit set in the device for steel is 0 8 mm In A1207C version the range of low limit that can be set is from 0 4 to 100 mm with the step of 0 1 mm The minimal thickness meaning regularly set in the device for steel is 10 mm The procedure of setting the arbitrary minimal thickness is similar to the procedure of velocity settings see art 3 2 of
15. ning off the device and at empty accumulators There are also finger holders on the device s case that stop fingers when measuring special clip for wearing the device on the clothes and a cap that has two purposes at the same time e t protects the surface of the probe from damaging during transportation and storage e efficiently covers the probe s surface with contact liquid Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 A1207C 1 3 DELIVERY SET The basic delivery set for A1207 A1207C No Description Quantity Ultrasonic Thickness Gauge A1207 A1207C with built in 1 accumulator and built in probe 3 Clip for wearing on clothes 1 item 5 External charging unit for A1207 A1207C 1 item 6 Steel control testing block for A1207 1 item 7 Passport of the device 1 item 8 User s Manual 1 item As the additional accessories to the basic set there are also available Probe s capsule 10 MHz 5 MHz Accumulator 1 2V Cable for external power supply Spare nameplates Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 2 DEVICE OPERATION 2 1 PREPARATIONS TO MEASUREMENTS Attention Before starting measurements clean the surface of the testing object from dirt friable rust or calx and then put enough contact liquid on the area of testing 2 2 MEASUREMENTS USING PRESET ULTRASOUND VELOCITIES T
16. o measure object s thickness you need to do following Press On Off button On the display you will see four horizontal strokes Press and hold the button of velocity choice On the display you will see the preset meanings changing each other in 2 3 seconds When you see the necessary meaning appearing on the display leave the button n Put the device on the testing object and hold it 1 2 seconds until you get the thickness readings screened on the display N q Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 1207 Notes When you hold the device on the testing surface there is indication of an acoustic contact on the display e metric system in the upper left corner you will see the symbol as at the picture on the right cabo e n Imperial system in the lower right corner there is a symbol as presented on the picture In a case of a bad contact with the surface the symbol will disappear Take the device from the object and see the result of the reading The reading will be screened during 7 10 seconds and then will be changed on four horizontal strokes Sometimes at the moment when you take the device of the object the reading can change In this case you need to repeat measurement 2 3 MEASUREMENTS AND ADJUSTMENT OF DEVICE If you get doubtful readings when measuring thickness you may need to test the devic
17. panel of the case off 22 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 Take the plate out of case o oeal the cables from the capsule off the plugs on the plate and take it from its frame Put the new capsule in A1207 in such a way that the separating line on its operating surface is parallel to the width of the device s case When replacing the probe s capsule you need carefully solder the marked cable from the sending prism to the lamella of the X1 plug and another cable of the receiving prism to the lamella of X2 plug Pay attention to the polarization of signal and screen wires After that you need to assemble the device and adapt it to the new probe s noise level see art 7 2 of this manual After you have replaced the probe s capsule you need to check the exactness of measurement on the testing samples A1207 is tested on the testing samples with known ultrasound velocity in them with the thickness of 0 8 30 mm The A1207C version is tested on the samples of 10 250 mm thick If the readings of the device at testing differ from the real thickness of the samples on more then 0 1 mm then you need to set the time that compensate the signal delay in probe s prisms The procedure of this setting is similar to the setting of ultrasound velocity see art 3 1 of this Manual This is item 5 of the Menu At setting the time you need to reduc
18. recalculated to the meaning of thickness Ultrasonic probe which is integrated in the case of the device operates as sending and receiving element for ultrasonic oscillations and their reflections This probe is put on the testing surface in the point where the thickness should be measured lf there are hollows on the opposite surface then ultrasonic pulses will be reflected from the hollows and the thickness will be equal to the destination from the upper surface to these hollows 18 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C 6 SOME NOTES ON OPERATION Factors that can influence the operation of the device and exactness of readings State of the surface Loose or exfoliating rust corrosion or dirt on the surface of testing object can influence the ultrasound transmission to the material That s why before measuring on such a surface you need to clean it from rust and calx and put more contact liquid then when testing on flat surfaces Cleaning of the rough corroded surfaces can not only make the readings more exact but also it can prolong the life time of the ultrasonic probe If there is a thick layer of paint on the surface and the paint started to exfoliate it is also necessary to remove it The thick paint reduces the level of signal and can make a false echo and that courses to the wrong readings of the device The measuring can be made through a thin layer of paint th
19. stic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 1207 1 2 DESCRIPTION puc 1 Electronic unit in the plastic case Digital light emitting diode display Capsule of piezoelectric transducer On Off button Ultrasonic velocity choice button Plug for charging unit Finger holders Cap Clip for wearing on clothes 0 Additional set up buttons 1 lt gt A1207 is equipped with double crystal piezoelectric probe 10MHz operating frequency and with 6 mm operating surface diameter A1207C version is equipped with single crystal probe on 5MHz operating frequency and with 10 mm operating surface diameter The structure of A1207 and A1207C allows replacing the probe s capsule in case of 5 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 1207 wearing This replacement can be made by the operator himself and is described in the item 7 3 of this manual The digital light emitting diode display makes possible the application of the device in a wide range of temperatures from 30 C up to 50 The device should be switched on right before the measurement The power on condition of the device is indicated with four strokes on the display or result of thickness readings or any other information on the display The continuous operating time from the built in accumulator is not less then 24 hours
20. this Manual 16 Acoustic Control Systems Ltd Moscow 2005 ULTRASONIC THICKNESS GAUGE A1207 1207 4 TECHNICAL SPECIFICATION Parameters Metric units Inch units of thickness for measurement on steel A1207 0 8 30 mm 0 03 1 18 in A1207C 10 250 mm 0 24 10 2 in Step of thickness indication 0 1 mm 0 002 in 0 005 0 1 mm 0 005 x 0 002 in Main error of m where thickness reading where X thickness reading Range of ultrasound velocities in materials 1000 9000 m s 0 394 3 540 1 0 in s Diameter of probe s operating surface 10 MHz 1207 6mm 6mm 5 MHz A1207C 10mm 10mm Power supply NIMH accumulator 1 2V 850 mAh 850 mAh Duration of non stop operation from the full l 24h 24h accumulator Operation conditions Temperature 30 C 50 C 30 50 C Relative air humidity 85 at t 25 C 85 at t 25 C Atmosphere pressure 84 107 kPa 84 107 kPa Sizes 143x26x18 mm 143x26x18 mm Weight with power supply elements 559 259 17 Acoustic Control Systems Moscow 2005 ULTRASONIC THICKNESS GAUGE 1207 A1207C 5 PRINCIPLES OF OPERATION A1207 and A1207C operate on the ultrasonic pulse echo principle The device measures the time of double travels of ultrasonic oscillations through the material from one surface to another This time is
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